Rock crushing machine



4 May 17, 193s.

J. coRsER 2,117,300

ROCK` CRUSHING MACHINE Filed Dec. 13, 1935 4 Sheets-Sheet 1 ROCK CRUSHING MACHINE Filed Dec. 15, 1955 4 Sheets-Sheet 2 Inv anto r' r l U'ohn Corsert May 17, 1938.

J. CORSER ROCK CRUSHING MACHINE Filed DeC. l5, 1935 4 Sheets-Sheet 5 BH1/fm 4 Sheets-Sheet 4 zoe.

IrLvenfli'Jl'` John Gorszr.- i 355 /fttornqgs J. CORSER ROCK CRUSHING MACHINE Filed DeC. 13, 1955 May 17, 1938.

ISB

Patented 17, `193.8`

PATENT OFFICE.

I 2,117,300 i noon cnUsnING MACHINE John Corser, Minneapolis, Minn., assigner to Diamond Iron Works, Incorporated, Minne apolls.

ApplicationV December 13, 1935, serial No. 54,252I

6 Claims.

My invention relates to rock crushing machines and more particularly to amachine lof this character which is so constructed and arranged that it may be readily transported from place to place f for use in operative work located at widely separated places, as inroad construction work. The

term rock crushingy is used in a broad sense and is intended to designate a machine capable of; crushing in addition to rock and stones used in construction work, other material such as ore for instance. 1

Among the objects of my invention are the provision of a machine which can be transported with safety on account of low center of gravity .and low structure and which has great rock crushing capacity and provision for delivering the crushed rock free from oversize pieces.

In the operation of my machine, the rock to be crushed is delivered in any suitable manner to an endless conveyor -which delivers to a screening device through which the portion of the material which is of standard degree of neness falls upon a take-away conveyor. Portions of the ma-` terial too coarse to pass through the screening device are delivered to crushing mechanism which 'f reduces the size of the pieces.-

This crushed material is fed to an opencenter inclined saucer-like conveyor which delivers to the original endless conveyor so as to againpass this material to the screening device whereby any overslze pieces are prevented from going to the take-away conveyor. In order to most conveniently feed the crushed material from the saucerlike conveyor to the original endlessconveyor. the latter runs through the open center of the former, so that when the material in the saucerlike conveyor during its rotation reaches the highest point thereof, it slides out upon the endless conveyor. By means of this construction, I

low center of gravity and of low structure so that it may be readily transported from place to place as the character and location of the work makes desirable.

As a specic embodiment of my broad'inventive idea, the screening device consists of a screen frame having an upper coarse screen and a lower liner screen, portions of the material too coarse to pass through the upper screen beingdelivered 50 to a jaw Crusher, and further portions too coarse to pass through the lower screen being delivered to a roll crusher. The material'from both of these Crushers is delivered by an enlless conveyor am able to provide a compact machine having a' the application of my invention in slightly different forms:

Fig. 1 is a side elevational view of the machine.4

Fig. 2 is a view in central vertical section. Fig. 3 is a view in section onthe line 3-3 of Fig. 2 on an enlarged scale. Fig. 4 is a view in section on the line 4-4 of Fig'. 3. Fig. 5 is a sectional view of a modication, this view corresponding to a portion of Fig. 2 and being on an enlarged scale. Fig. 6.is a view in section on the line 6--6 of Fig. 5 but with an endless conveyor omitted. Fig. 'lis a fragmentary top plan view of a saucerlike conveyor. Fig. 8 is a view in section on the line 8-8 of Fig. 7. v

Referring Yto the construction shown in the drawings, the numeral I0 designates the.f side frame membersof the machine which are mountv ed on wheels I2 in order that the machine may be readily transported from place to place.' The frame carries uprights' I4, I6 and I8 as best shown in Fig. l which support a hopper 20 adapted to be supplied in any suitable manner with the material to be crushed. The bottom ofthe hopperisprovided with a gate or slide 22 resting upon rollers 24 carried by a horizontal support 26. -Thc gate 22 is ,connected by a pitman 28 with an eccentric 30 whereby thegate may be reciprocated runs in an inclined position over a lower roller34 e and an upper roller 36, the upper stretch of this conveyor being supported on small rollers 38 carried by inclined frame members 40. The small rollers 38 have their top surfacesl below the plane which extends between the top surfaces of the lrollers 34 and 36 whereby the weight of material will give the upper stretch of the conveyor 32 a dished condition as best seen in Fig. 5. The upper end of the conveyor 32 delivers into a hopper 42 supported by standards 43 and underneath which is an inclined screen frame 44 carrying an upper screen 46 vand a lower finer screen 48.

The screen frame 44 is supported at both sides by rods 58 which at their lower ends are pivoted to inclined frame members 52. Associated with the attachment of the rods 50 with the screen frame, are coiled springs 54 which permit the screen frame to have a compound swinging movement up and'down and back and forth. This movement is imparted by eccentrics 56 secured to a shaft 58 mounted in bearings carried by standards 60 extending upfrom the main frame of the machine. The fine material or sand sometimes referred to as nes, drops through both of the screens 46 and 48 into a hopper 62 underneath which is.a iiexible endless conveyor'` 64 passing around a lower roller 66 and a similar' upper roller not shown. The conveyor 64 carries 4the line material to the desired point of delivery, l the upper stretch of the conveyor being supported 'I'he material which is too coarse to drop through the upper screen 46 passes oft` the lower end. tllereof to a chute 10 and between the xed jaw 12 and swinging jaw 1,4 of a jaw crusher which delivers upon' a flexible endless conveyor 16 passing around a lower roller 18 and anv upper roller 80 ahead of which is a deector plate 8| secured to the frame members 40. -The upper stretch of the conveyor is supported yby small rollers 82 in the manner previouslyv described. The material which drops through the upper screen 46 but is too coarse to drop through` the lower screen 48 passes off the lower end thereof into a box 84 from which it passes` between the rolls 86 and 88 of a roll crusher which delivers upon the conveyor 16 previously referred to.

An important feature of the machine will now be described in detail. This includes what will be termed a saucer-like conveyor 90 having a depending circular flange 92 supported by rollers 94 engaging the inner surface of the flange and by vertical rollers 96 engaging the bottom edge of the flange. The rollers are carried by inclined supports 98 whereby the saucer-like conveyor 90 is supported for rotation in an inclined position. The conveyor outside of the circular ange 92 is provided with a ring gear |00 meshing with a pinion |02 secured to a shaft |04 to which is also secured a sprocket wheel |06. The shaft |04 is rotatable in a bearing |08 as shown in Fig. 4 and the sprocket |06 is rotated in a manner which will shortly be described.

As is apparent from Figs. 1 and 2, the upper end of the conveyor 16 delivers into the lower portion of the saucer conveyor 90. As will be understood from Figs. 2 and 3, the conveyor 90 has an open center and the conveyor 32 passes through this open center. Fixed side wall members I I0 for the conveyor 32 also extend through said open center being supported by brackets extending up from the frame members 40. The lower ends of the side wall members ||0 are connected by a wall member |2. The material delivered by the conveyor 16 falls into the saucer conveyor 90 and is prevented from going out of its open c :nter by the plate 8|. When the material which is being carried upl by the saucer conveyor reaches the uppermost position, it slides out' upon the endless conveyor 32 as will best be understood from Fig. 2, from which figure it will be seen that the plate ||2 keeps the material from falling oi the lower end of the endless conveyor 32. As will be apparent from Figs. 3 and 4, the wall members ||0 are inclined to deflect the material upon the conveyor 32.

The manner in which the various parts of the machine are driven will now be described. A driving pulley H4 which may be driven from any suitable source of power is secured to the power 'shaft ||6 which operates the swinging crusher jaw 14. Secured to the shaft ||6 as shown in Fig. 2 is a pulley ||8Aconnected by a belt |20 with a pulley |22 secured to a shaft |24. Secured to 'the shaft |24 are two sprocket wheels |26 and |28. 'Ihe sprocket |28 is connected by a sprocket chain |30 with a sprocket |32 which is secured to the shaft of the roller 80 by which the endless conveyor 16 is driven. The sprocket |26 is connected by a sprocket chain |34 with the sprocket |06 by which the saucer conveyor 90 is driven. As shown in Fig. 2, the sprocketv chain has associated 'therewith two guide sprockets |36 and |38. Secured to the power shaft ||6 is a pulley |40 which is connected by a belt |42 with a pulleyA |44 secured to the shaft of the eccentric 56 which operates the screen frame 44. Secured to the shaft ||6 as shown in Fig. 1 is a pulley |46 connected by a belt |40 with a pulley |50 secured to a shaft |52 which has a smaller pulley |54 secured thereto. A belt |56 passes around a pulley |58 secured to a shaft |60 and this belt also passes around pulleys |62 and |64 secured respectively to the shafts of the roll crushers 86 and 88 and whereby these rolls are driven in the proper direction. Secured to the shaft |60 is a pulley |66 'connected by a belt |68 with a pulleyA |10 secured to a shaft |12. A second pulley |14 secured to the shaft |12 is connected by a belt |16 with a pulley on the upper roller of the conveyor 64 -by means of which this conveyor is driven. A third pulley |18 shown in Fig. 2 secured to the shaft |12 is connected by a belt |80 with` a pulley on the shaft of the upper roller 36 of the conveyor 32; Secured to the shaft of the lower roller 34 of this conveyor is a .pulley |8|` connected by a belt |82 with a pulley '|84 secured to the shaft of the eccentric 30 which reciprocates the gate 22. l

Thefmodications shown in Figs. 5 to 8 will now be described. Referring to Fig. 5, it will be seen that the sprocket wheel |26 on the shaft |24 is connected by a sprocket chain |86 with a sprocket wheel |88 secured to a shaft |90. Secured to the shaft |90 is a bevel gear |92 meshing with a bevel gear |94 secured to a shaft |96 to the upper end of which is secured a pinion |98 which meshes with a ring gear 200 carried by the exterior of the saucer conveyor 90. The annular bottom of the saucer in this form is constituted by a exible ring 202 secured at its outer margin to a circular interiorly .projecting flange 204 formed on thevsaucer. The flexible ring 202 is supported for most'of its circumference upon a rigid ring member 205 having a gap in its upper portion whereby the flexible bottom member 202 may sag downwardly atits portion indicated at 206 which comes uppermost as shown in Fig. 5 to readily discharge the material upon the endless conveyor 32. In Figs. 7 and 8, the annular bottom of the saucer is shown provided withnpwardly extending partitions 208 to form pockets to prevent the material from passing around on the bottom of the saucer when the material comes into upperposition. Fig. 8 showsthat the ring gear |0|' may be located inside of the circular flange 92 instead of being outside thereof as in Fig. 4.

' The operation and advantages of my invention will be apparent from thea foregoing description and to a large extent have already been indicated. The compact assembly of the machine whereby the structure is kept low is apparent from Figs. 1 and 2. The lower end of the endless conveyor 32 is very low down with the hopper positioned above the low portion. The endless con-` wardly thereby -saucer-like conveyor and Aceives the portions 'oi' the materialtoo coarse to I claim:

1. In a rock crushing machine, the combination of a screening device to which the material to be treated is delivered and through which the portions of the material which are suiiiciently ine pass, crushing mechanism which receives the portions of material too coarse to pass through said screening device. means for delivering `said portions that do not pass the screening device to said crushing mechanism, an inclined ,open center saucer-like conveyor ior receiving the crushed material, receiving means passing through said saucer-like conveyor for delivering to said screening device, means for delivering vthe crushed material from said crushing mechanism to said means for rotating said saucer-like conveyor whereby the material carried upwardly thereby is delivered to said receiving means through said open center.

2. In a rock crushing machine, the combination of a screening device to which the material to be treatedis delivered, said screening device having an upper coarse screen and a lower finer screen through both of which the portions vof the material which are sufliciently ine pass, primary crushing means which receives the portions of the material too coarse to pass through said upper screen, secondary crushing means which receives further portions of the material too coarse to pass through said lower screen, means for delivering said portions that do not pass the screening device to the primary and secondary crushing means respectively, an inclined open center saucer-like conveyor for receiving all ofthe crushed material, receiving means passing through said saucer-like conveyor for delivering to said screen; ing device, means for delivering the crushed material from said` crushing means ,to saidsaucerlike conveyor and means for rotating said saucerlike conveyor whereby the material carried up' is` delivered to said receiving means through said open-center.

l, 3. In a rock crushing machine, the combination of an inclined endless conveyor upon which the material to be treated is deposited, a screening de vice to which the material is delivered from theupper-end of said conveyor and through which the portions ofthe material which are sumciently iine pass, crushing mechanism which receives the portions o1' the material 'too 'coarse to pass through` said screening device, means for delivering said portions that do not pass the screening device to said crushing mechanism, an open center saucer-like conveyor for receiving the' crushed material inclined in the opposite. direction with relation to said endless conveyor and throughthe open centerof which said endless conveyor runs, means forv delivering the crushed material 'from said crushing mechanism to said saucer-like conveyor and means` for rotating, said saucer-like conveyor whereby the material carried upwardly therebyv is delivered to said endless conveyor through said open center.

4. In a rock crushing machine, the combination of an inclined endless conveyor upon which the material to be treated is deposited, a screening device to which the material is delivered from the upper end oi' said conveyor, said screening device having an upper coarse screen and a lower finer screen through both ot which the portions of the material which aresumciently ilne pass. primary crushing means which re- 'all pass through said upper screen, secondary crushing means which receives further portions ofthe material, too coarse to pass through said lower screen, means for delivering said portions that do not pass the screening device to the primary and secondary crushing means" respectively, an

open\center saucer-like conveyor for receiving of the crushed material inclined in" the opposite direction with relation to said endless conveyor and vthrcugli the open center of which said endless conveyor runs, means for delivering the crushed material from s'aid `crushing means to'lsaid saucer-likeconveyor and means for rotating said saucer-like conveyor whereby the material carried upwardly thereby is delivered to said endless conveyor through said open center.

5. In a rock crushing machine, the combination of an inclined endless conveyor upon which the material to be'treated is deposited, a screening -device to which the material is delivered from the upper .end ofjsaid conveyor, said screening' device having an uppercoarse screen and a lower finer screen through 'both of which the portions of the material which are suiilciently fine pass, a jaw crusher which receives of the material too coarse to passthrough said upper screen, a roll-crusher which receives further portions of the material too coarse to pass through said lower screen, said portions that do not pass the screens tothe jaw and roll -crushers respectively, an open center saucer-like conveyor for receiving all of the crushed material inclined in the opposite direction with relation to said endless conveyor and through the open center of which said endless conveyor runs, means for delivering the crushed material from said crushers to said saucer-like conveyor and means for rotating said saucer-like conveyor whereby the material carried upwardly thereby is delivered to said through said open center.

6. In a rock crushing machine having a bed frame, the combination of aninclined endless conveyor upon which the material to be treated is deposited, the lower end oi .said endless conveyor being close to one end of said bed frame, a screening device to which the materialis delivered from the upper end of said conveyor and through which the portions of the material which are suiilciently fine pass, said screening device being supported above the other end ci said bed frame, crushing mechanism supported by said bed frame underneath the intermediate portion of said conveyor and which receives the portions oi' the material too coarse to pass through said screening device, means for delivering said portions that do not pass the screening device to said crushing mechanism, an open center saucerlike conveyor for receiving the crushed material inclined in the opposite direction with relation to said endless conveyor and through the open center of which said endless conveyor runs, means for delivering the crushed material from said crushing mechanism to said saucer-like conveyor and means for rotating said saucer-like conveyor whereby the material carried upwardly endless conveyor thereby is delivered to said endless conveyor the portions means for delivering 

